Windows 8 is out with a new version of Internet Explorer, Firefox has boosted its JavaScript power and memory usage, and Chrome's been slowly improving its speed. How do the new versions stack up against each other? We found out in our latest round of browser speed tests.

Now that Mountain Lion's out with a shiny new version of Safari 6, we thought it time to revisit our browser speed tests. As always, we're pitting the four most popular browsers—this time, on a Mac—against one another in a battle of startup speed, tab loading prowess, and lots more.

Chrome 17 is out with a new prerendering feature designed to make your pages load faster, and both Firefox and Opera have also released speedy new versions since our last round of speed tests. So, we've once again pitted the four most popular web browsers against each other in a battle of startup times, tab loading…

Firefox 7 is set to be released today, and with a big focus on performance, we thought it time for another round of browser speed test. We pitted the four most popular Windows browsers against each other in a battle of startup times, tab-loading times, JavaScript powers, and memory usage, with some surprising results.

One of the many nice things about Android is that you can install your own essential apps, like a browser, as your better default option. But do third-party alternatives like Firefox, Opera, or Dolphin actually deliver a better browser? In many cases, yes. Here's how.

It turns out that Internet Explorer 9, in its 64-bit version, apparently has a different, slower JavaScript engine than its 32-bit counterpart. We didn't know that when starting our browser tests, but we've now updated our tests with IE 9 32-bit results, at least in the JavaScript and CSS categories. Doing so gave IE…

It's been quite a month for browsers, with Internet Explorer and Firefox both dropping big new versions, and Chrome and Opera continuing their regular improvements. We tested all these browsers' startup and tab-loading times, JavaScript powers, and memory use for your fast-minded enjoyment. Update: With…

Google's got a new "Crankshaft" in its bleeding-edge Chrome, Internet Explorer 9 is out to prove its modern mettle, Firefox 4 is nearly complete, and Opera's adding extensions. It's a good time to put these browsers head to head.

Many readers have asked us to replicate our browser speed tests on a Mac, to see the difference in platforms and performance. So we snagged a new MacBook Pro when nobody was looking and tested the latest browsers on it.

Apple's stepped up with Safari 5, Firefox has brought forth a more crash-proof 3.6, and Opera's continuing to push forward in betas. Let's break out the timer and testing software to see how the latest browsers run on real hardware.

Download Squad's Sebastian Anthony pits developer versions of IE9, Firefox, Chrome, and Opera against each other in an HTML5 benchmark. The results: Currently the hardware acceleration available in IE9 and Firefox 3.7 take the performance cake. [Download Squad]

This morning Apple surprised everyone by approving the Opera Mini web browser for the iPhone and iPod touch, bringing one of the most popular mobile browsers to the most popular smartphone. So how does it stack up?

Firefox 3.6 is out, Chrome's stable version got a big upgrade, and Opera 10.5 is inching toward release. It's a great time for us to break out the timer, process manager, and code tracker for some up-to-date browser speed tests.